Binding agent, core sand mixture and a method for producing...

Details Binding agent, core sand mixture and a method for producing... Binding agent, core sand mixture and a method for producing...

2006-04-04

2006-04-04

Marcantoni, Paul (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Alkali metal silicate containing

C106S603000, C106S038300, C106S038350

Reexamination Certificate

active

07022178

ABSTRACT:
A binding agent system based on water glass is disclosed, comprising an aqueous alkali silicate solution having the general composition: xSiO2·yM2O ·zH2O, with M standing for the alkali ions Li+, K+, or Na+, and a hygroscopic base, which is added in the ratio 1:4 to 1:6, with the modulus Na2O/SiO2being equal to 2.5 to 3.5 at a proportion of solids of 20 to 40% and with 30% sodium hydroxide in an aqueous solution being used as the hygroscopic base. According to the present invention, the aqueous alkali silicate solution contains an emulsion solution having 8 to 10% silicone oil in relation to the quantity of binder, with the silicone oil having a boiling point≧250°. The quantity of binder for a core sand mixture is 1.0 to 2.5%, in relation to the total quantity of granular solid, with the production method being performed in a core shooter comprising a vertically positioned housing having a horizontal air intake. The core sand mixture is introduced via a funnel into a slotted sand cylinder. The connection between the funnel and the sand cylinder is closed during the shooting. The core sand mixture located in the slotted sand cylinder is compacted using an air pressure of p1and then shot into the core box at a pressure p2>p1.

REFERENCES:
patent: 3442665 (1969-05-01), Muller et al.
patent: 3898090 (1975-08-01), Clark
patent: 3955988 (1976-05-01), Bosch et al.
patent: 3977888 (1976-08-01), Sano et al.
patent: 4162238 (1979-07-01), Bergna
patent: 4212677 (1980-07-01), Khmelev et al.
patent: 4361696 (1982-11-01), Blount
patent: 5601777 (1997-02-01), Fischer et al.
patent: 1119206 (1996-03-01), None
patent: 1308106 (2001-08-01), None
patent: 253072 (1987-10-01), None
patent: 53 277 (1967-01-01), None
patent: 82 809 (1971-06-01), None
patent: 29 09 107 (1979-09-01), None
patent: 19632293 (1998-02-01), None
patent: 196 35 173 (1998-04-01), None
patent: 2464766 (1981-03-01), None
patent: 857132 (1960-12-01), None
patent: 1017744 (1966-01-01), None
patent: 1332943 (1973-10-01), None
patent: 2013121 (1979-08-01), None
patent: 2016483 (1979-09-01), None
patent: 1122307 (1988-08-01), None
patent: 44-20721 (1944-09-01), None
patent: 46-19579 (1945-07-01), None
patent: 47-23320 (1972-06-01), None
patent: 47-23320 (1972-10-01), None
patent: 47-23320 (1972-11-01), None
patent: 53-144421 (1978-12-01), None
patent: 58-9859 (1983-01-01), None
patent: 02263775 (1990-10-01), None
patent: 154838 (1991-09-01), None
patent: 174819 (1998-09-01), None
patent: 2177463 (2001-12-01), None
patent: 1710529 (1992-02-01), None
“Modern Methods for Manufacturing of Molds”, pp. 45-46, R.O.C. Casting Association, Jan. 1990.
Decision for Taiwan Application No. 89122597.
Office Action for Japanese Application No. 11-316361.

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